57523309 has 2 divisors, whose sum is σ = 57523310. Its totient is φ = 57523308.

The previous prime is 57523303. The next prime is 57523313. The reversal of 57523309 is 90332575.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41242084 + 16281225 = 6422^2 + 4035^2 .

It is a cyclic number.

It is not a de Polignac number, because 57523309 - 2⁷ = 57523181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57523303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28761654 + 28761655.

It is an arithmetic number, because the mean of its divisors is an integer number (28761655).

Almost surely, 2^57523309 is an apocalyptic number.

It is an amenable number.

57523309 is a deficient number, since it is larger than the sum of its proper divisors (1).

57523309 is an equidigital number, since it uses as much as digits as its factorization.

57523309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28350, while the sum is 34.

The square root of 57523309 is about 7584.4122382687. The cubic root of 57523309 is about 386.0242787668.

The spelling of 57523309 in words is "fifty-seven million, five hundred twenty-three thousand, three hundred nine".